html, body {
    font-size: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    width: 100%;
}
.logo {
    margin: 10px auto;
    width: 95%;
}
.main {
    border: 1px solid;
    height: 17em;
    margin:0 auto;
    width: 95%;
}.top {  height: 17em;text-align: center;
    overflow: hidden;
    width: 100%;
}
.to {
    font-size: 1.8em;
    line-height: 0;
    text-align: center;
}
.top > span {
    font-size: 1em;
}
.jp {
    margin: 0 auto;
    width: 30%;
}
.bot {
    margin: 0;
}
.cen {
    margin: 0 auto;
    width: 95%;
}.task > span {
    border: 1px solid black;
    display: inline-block;
    float: left;
    margin-left: 12px;
    width: 20%;
}
.sj::after {
    clear: both;
    content: "";
    display: table;
}
.xuan {
    border: 1px solid black;
    height: 6em;
    margin: 40px auto 10px;
    width: 95%;
}
.xuan > span,.xuan > p {
    margin-left: 2em;
}
.cen > span {
    border: 1px solid black;
    border-radius: 8px;
    display: inline-block;
    height: 10px;
    width: 10px;
}
.sj{ text-align: center;}
.ka {
    border: 1px solid black;
    border-radius: 5px;
    display: block;
    margin: 0 auto;
    text-align: center;
    width: 50%;
}
.wo {
    border: 1px solid black;
    border-radius: 5px;
    height: 1.5em;
    margin-top: 20px;
    text-align: center;
    width: 40%;
}
.bottom {
    height: auto;
}.bottom > a {
    display: block;
    height: 50%;
    margin: 20px auto;
    width: 50%;
}




.tx {
    height: 4em;
    margin: 5px auto 0;
    position: relative;
    width: 95%;
}
.tx img {
    width: 3em;
}
.tx > a {
    position: absolute;
    right: 0;
}img {
    width: 100%;
}ul {
    display: inline-block;
    list-style: outside none none;
    margin: 0 0 0 2em;
    padding: 0;
}.xuan.zy {
    height: 10em;
}
.xuan.zy img {
    height: 30px;
    width: 30px;
}
.zan1 {
     line-height: 35px;
    margin-left: 2em;
    position: relative;
}.wo1 { margin-top: 40px;
    height: 1.5em;
    position: relative;
    text-align: center;
}.wo1 a {
    border: 1px solid black;
    border-radius: 5px;
    position: absolute;
    width: 40%;
}.le {
    left: 0;
}.ri {
    right: 0;
}



.tx1 {
    height: 7em;
    margin: 5px auto 0;
    position: relative;
    width: 95%;
}.sn {
    left: 60%;
    position: absolute;
    top:0;
}.sn > img {
    width: 6em;
}



.hj {
    margin: 0 auto;
    text-align: center;
    width: 60%;
}
h2 {
    font-size: 2em;
    font-weight: normal;
    margin: 0 auto 10px;
    text-align: left;
    width: 80%;
}